Method and apparatus for pilot estimation using a prediction error method with a kalman filter and pseudo-linear regression

In a mobile station for use in a wireless communication system, a method for estimating an original pilot signal, the method comprising:

• receiving a CDMA signal;
• despreading the CDMA signal;
• obtaining a pilot signal from the CDMA signal;
• and
• estimating an original pilot signal using a Kalman filter to produce a pilot estimate.

A mobile station for use in a wireless communication system wherein the mobile station is configured to estimate an original pilot signal, the mobile station comprising:

• an antenna for receiving a CDMA signal;
• a receiver in electronic communication with the antenna;
• a front-end processing and despreading component in electronic communication with the receiver for despreading the CDMA signal;
• a pilot estimation component in electronic communication with the front-end processing and despreading component for estimating an original pilot signal using a Kalman filter to produce a pilot estimate;
• and
• a demodulation component in electronic communication with the pilot estimation component and the front-end processing and despreading component for providing demodulated data symbols to the mobile station.

A method for offline system identification to configure a Kalman filter for real-time use in a wireless communication system to estimate a pilot signal, the method comprising:

• providing training samples;
• initializing parameters;
• and until the Kalman filter has converged, iteratively performing the following steps:
• calculating new parameters using a prediction error method and pseudo linear regression;
• and
• generating a new state estimate using the Kalman filter.

A mobile station for use in a wireless communication system wherein the mobile station is configured to estimate an original pilot signal, the mobile station comprising:

• means for receiving a CDMA signal;
• means for despreading the CDMA signal;
• means for obtaining a pilot signal from the CDMA signal;
• and
• means for estimating an original pilot signal using a Kalman filter to produce a pilot estimate.